US3729615A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condition control device and system
Assignee: Deltrol Corp
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Filing: 1971-04-12
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Granted: 1973-04-24
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Expires: 1991-04-12
Abstract
Abstract A timing device controls a group of electric heaters, turning them on in sequence in response to call for heat by a thermostat and turning them off in sequence when the call for heat is satisfied. The timer has two stopping points, one with the heaters off and the other with the heaters on. A single switch controls the timer motor and is opened by a timer can at the off and on positions. The switch is held open at the off position by an off latch and at the on position by an on latch. These latches are released by a solenoid controlled by the room thermostat. The latches are also controlled by a timer cam, the off latch being held released when the timer is in the on position, and the on latch being held out at the off position. The load switches for the heaters are also opened instantly by a second solenoid responding to an unfavorable condition. This same action releases the on latch to cause the timer to return to the off position.
Inventors
- 👤 J Harris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 07:32
CPC Classifications
F; F24; F24C; F24C7/00; F24C7/08; H; H01; H01H; H01H43/00; H01H43/10; H01H43/12; H01H43/125
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
165 words
In a two position motor operated device, a control element movable from a first position to a second position and back to the first position, motor means for driving said control element, means including a controller for said motor means, said controller having a run controlling position causing the motor means to run and a stop controlling position causing the motor means to stop, stop means mechanically actuated by said control element arranged to mechanically move the controller to the stop controlling position when the control element reaches its first position and also when it reaches its second position, and master control means arranged mechanically to override said stop means to move the controller back to the run controlling position, said master control means having a first position in which it overrides the stop means when the control element is in its first position and having a second position in which it overrides the stop means when the control element is in its second position.
Claim 2
Dependent Claim
165 words
In a two position motor operated device, a control element movable from a first position to a second position and back to the first position, motor means for driving said control element, means including a controller for said motor means, said controller having a run controlling position causing the motor means to run and a stop controlling position causing the motor means to stop, stop means mechanically actuated by said control element arranged to mechanically move the controller to the stop controlling position when the control element reaches its first position and also when it reaches its second position, and master control means arranged mechanically to override said stop means to move the controller back to the run controlling position, said master control means having a first position in which it overrides the stop means when the control element is in its first position and having a second position in which it overrides the stop means when the control element is in its second position.
Claim 3
Dependent Claim
62 words
The combination recited in claim 1 in which the master control means includes two overriding control members each having stop and run positions, a first overriding member being moved to run position when the master control means is in its first position and the second overriding member being moved to run position when the master control means is in its second position.
Claim 4
Dependent Claim
33 words
The combination recited in claim 2 in which either of the overriding members when in the stop position can maintain the controller in its stop controlling position independently of the other overriding member.
Claim 5
Dependent Claim
46 words
The combination recited in claim 3 in which one of the overriding members is held in run position by the control element when in its first position and the other overriding member is held in run position when the control element is in its second position.
Claim 6
Dependent Claim
70 words
The combination recited in claim 1 in which the master control means includes two separate latches both of which must be released to move the controller back to its run control position, one of the latches being held in released position by the control element when in its first position and the other of the latches being held in released position when the control element is in its second position.
Claim 7
Dependent Claim
97 words
In a control device, a switch, means for moving said switch from a first position to a second position, two separate latches, said latches being constructed and arranged when in latching position to hold said switch in said second position, and master control means for releasing said latches, said master control means having a first position releasing one latch while allowing the other latch to remain in latching position, said master control means also having a second position in which it releases the other of said latches while allowing said one latch to remain in latching position.
Claim 8
Dependent Claim
97 words
In a control device, a switch, means for moving said switch from a first position to a second position, two separate latches, said latches being constructed and arranged when in latching position to hold said switch in said second position, and master control means for releasing said latches, said master control means having a first position releasing one latch while allowing the other latch to remain in latching position, said master control means also having a second position in which it releases the other of said latches while allowing said one latch to remain in latching position.
Claim 9
Dependent Claim
34 words
The combination set forth in claim 6 in which the means for moving the switch from a first position to a second position also selectively releases the latches independently of the master control means.
Claim 10
Dependent Claim
24 words
The combination set forth in claim 7 in which a motor drives the means for moving the switch and the switch controls said motor.
Claim 11
Dependent Claim
126 words
In a control device, a switch, can means arranged to move the switch from a first control position to a second control position, a pair of latches arranged side by side for holding the switch in the second control position, each latch being pivoted and constructed and arranged to be capable of holding the switch in the second control position independently of the other, a control lever for the latches, said control lever being pivoted on an axis spaced from the latch pivots and engaging the latches for operating the same, said control lever being arranged to release one latch upon clockwise rotation of the control lever about its pivot and to release the other latch upon counterclockwise rotation of the control lever about its pivot.
Claim 12
Dependent Claim
126 words
In a control device, a switch, can means arranged to move the switch from a first control position to a second control position, a pair of latches arranged side by side for holding the switch in the second control position, each latch being pivoted and constructed and arranged to be capable of holding the switch in the second control position independently of the other, a control lever for the latches, said control lever being pivoted on an axis spaced from the latch pivots and engaging the latches for operating the same, said control lever being arranged to release one latch upon clockwise rotation of the control lever about its pivot and to release the other latch upon counterclockwise rotation of the control lever about its pivot.
Claim 13
Dependent Claim
45 words
A device as recited in claim 9 in which the cam means is driven by a motor controlled by the switch and in which the latches are selectively released at different positions of the cam means in addition to being released by the control lever.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-04-23 | 1976-10-23 | 1977-04-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-04-23 | 1980-10-23 | 1981-04-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-04-23 | 1984-10-23 | 1985-04-24 | $7700.00 | Window Closed / Lapsed |